The first reconstruction act
E. Generally decreased as the labor market became tighter
Short Answer : The Kyoto Protocol was signed by President Clinton, but Senate refused to pass it. President Bush rejected the Kyoto Protocol, and the Kyoto Protocol was consequentially killed.
Long Answer:
A resolution was passed in Senate on the qualifications for which a treaty would have to meet for Senate to pass it. The Kyoto Protocol did not meet these standards; not only did the Senate as a whole not one to pass it, it wasn't allowed to pass it. The main concerns were that firstly, many developed countries were not participating in it, and secondly, there were fears that the Kyoto Protocol would harm the American economy (especially the coal industry) and either way wouldn't be very effectual at combatting global warming.
Answer:
it was difficult to govern all the people.
it was difficult to get news to all parts of the empire
it was difficult to defend all of the parts of the empire from attack.